Hey there Merlinemicheli3271,
When an occlusion of the coronary vessel occurs, the person experiences a?
Answer:
Myocardial Infarction
Hope this helps :D
<em>~Natasha♥</em>
It requires energy when a substance must travel against a concentration gradient through the membrane
Answer:
a. + glucose, + lactose = On
b. - glucose, - lactose = Off
c. + glucose, - lactose = Off
d. - glucose, + lactose = On
Explanation:
Lac operon has both types of control, repressible and inducible.
Whenever glucose level is low in the cell, an enzyme known as adenylyl cyclase raises the level of cAMP which forms a dimer with CRP protein and they both act as activator of lac operon and cause expression.
Apart from this, when lactose is present in the cell, β-galactosidase enzyme metabolizes lactose to form allolactose which causes allosteric repulsion in the lac repressor and causes its removal from the operator. As soon as repressor is removed lac operon gets activated.
In wild type lac operons, the expression of lac operon occurs when glucose level is low in the cell and lactose is present but in this mutant presence or absence of glucose will not make a difference because CRP will bind Plac promoter independent of cAMP level i.e. activator CRP will work even in high glucose concentration. If lactose is present then lac operon will always express so in option 'a & d' lac operon will express but in option 'b & c' it will not express.
Answer:
The first one is It helps the founder defend itself
The second one is A viceroy butterfly has the same markings as a bad-tasting monarch butter fly
The third one is Mimicry if im wrong do grouping
The fourth one is The light moths will be captured by predators more easily than the dark moths, and the population of the dark moths will rise
The fifth one is TBH i cant answer it i dont see the table
The sixth one is The green insect population will increase and the yellow insect population will decrease
The seventh one is A penguin uses sleek, smooth belly feathers to slide on ice
The eight one is Digging holes and tunnels for food
Explanation:
I answered these on the most logical reasons. I did not search these up anyways if im wrong tell me the ones that were wrong.
